How do you get the filament out of a Bowden tube?

How do you get the filament out of a Bowden tube?

Stick something long and thin down the tube and push the broken filament out. An easy way to do this is by using a piece of fresh (non-brittle) filament. Alternatively, you can use a long metal rod like a thin welding rod, or my favorite, a guitar string.

What is the Bowden tube for?

The motor feeds the filament through a Bowden tube (usually made of PTFE plastic) to the print head. The tube guides the filament from the fixed motor to the moving hot end, protecting the plastic from snapping or being stretched by constant movement. Naturally, Bowden tubes have distinct advantages and disadvantages.

Why is filament building up on the nozzle during a print?

There is a huge buildup of the blue PLA right on the nozzle. Before all of this, I never had a buildup like this. Why is this happening, and what can I do to fix this? What brand and size nozzle? Some after market ones are not too good on finish. If you reassembled the hot end, make sure you tightened the nozzle correctly. It should not be flush.

What causes filament to get stuck in PTFE tubing?

For filament that is stuck inside of the hotend One of the most common causes of filament getting stuck in a hotend is a PTFE tube that does not reach all the way to the heatbreak or nozzle. This creates a gap that filament can melt and expand into.

What causes filament to get stuck in a hotend?

One of the most common causes of filament getting stuck in a hotend is a PTFE tube that does not reach all the way to the heatbreak or nozzle. This creates a gap that filament can melt and expand into. When this happens, the molten filament can cool down into a blob that prevents the filament from moving further.

What causes filament to get stuck in a Bowden tube?

The main cause of filament breaking and getting stuck in Bowden tubes is brittle filament. Some filaments, like PLA, tend to become brittle after they absorb too much moisture from the surrounding air. Leaving filament out for a long time without using it gives it ample opportunity to absorb moisture.